Work Needed to Increase Electron Speed

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Homework Help Overview

The discussion revolves around calculating the work required to accelerate an electron from rest to a speed of 0.52 times the speed of light (0.52c). The subject area involves concepts from relativistic physics and energy transformations.

Discussion Character

  • Exploratory, Conceptual clarification, Mathematical reasoning

Approaches and Questions Raised

  • The original poster attempts to use the relativistic energy equation, expressing uncertainty about the correctness of their calculated energy value. Some participants provide brief affirmations regarding the relationship between work and energy change.

Discussion Status

The discussion includes attempts to clarify the relationship between work and energy, with some participants expressing realizations about the concepts involved. There is a mix of exploratory dialogue and conceptual clarification, though no explicit consensus is reached.

Contextual Notes

Participants are navigating the complexities of relativistic effects and energy calculations, with some uncertainty regarding the application of relevant equations. The original poster expresses doubt about their calculations, indicating a need for further exploration of the topic.

DeadxBunny
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Homework Statement


How much work must be done to increase the speed of an electron from rest to 0.52c?


Homework Equations


I don't know :)


The Attempt at a Solution


I tried E=Ymc^2 where Y = 1/[1-(v/c)^2]^1/2 and got 3.19821x10^-22 J which translates to 1.998x10^-9 MeV, but I don't think this answer is right. Could someone explain this one to me? Thanks! :biggrin:
 
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Work = change in energy.

Does that help?
 
Oh, duh! I feel stupid lol.. I got it now. Thanks! :blushing:

KoGs said:
Work = change in energy.

Does that help?
 
No problem. I love helping people feel stupid :)
 

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